Walchem EK series Instruction Manual Download Page 1

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EW-F & EK Series

Electronic Metering Pump

Instruction Manual

W A L C H E M

IWAKI America Inc.

EW-F & EK Series Metering Pumps

Five Boynton Road Hopping Brook Park Holliston, MA 01746 USA

TEL: 508-429-1110 FAX: 508-429-7433 WEB: www.walchem.com

Summary of Contents for EK series

Page 1: ...ectronic Metering Pump Instruction Manual W A L C H E M IWAKI America Inc EW F EK Series Metering Pumps Five Boynton Road Hopping Brook Park Holliston MA 01746 USA TEL 508 429 1110 FAX 508 429 7433 WE...

Page 2: ...ication to be free from defects in workmanship and material for a period of two years from date of delivery from the factory or authorized distributor under normal use and service and otherwise when s...

Page 3: ...del Code 2 1 4 Specifications 3 1 5 Dimensions 4 2 0 INSTALLATION 7 2 1 Unpacking 7 2 2 Location 7 2 3 Supply Tubing 8 2 4 Discharge Tubing 9 2 5 Installing Injection BackPressure Valve 10 2 6 Electri...

Page 4: ...y in case of rupture or damage UV resistant tubing should be used if the tubing is exposed to UV light Always adhere to local plumbing codes and requirements Be sure that the installation does not con...

Page 5: ...on all EW models features digitally adjustable speed and external pulse input control stop pre stop inputs R For use on all EK models features external pulse input control and stop input 4 Voltage 1 1...

Page 6: ...05 0 22 150 1 0 3 8 C16 H 0 6 40 0 03 0 17 250 1 7 suc x NPT dis C21 2 3 145 0 08 0 40 105 0 7 3 8 C31 4 3 270 0 15 0 75 50 0 35 1 2 C36 2 6 7 420 0 24 1 17 30 0 2 1 2 1 Auto Air vent valve reduces ma...

Page 7: ...lve increases overall length by 0 37 Addition of an Auto Air Vent Valve increases overall length by 1 59 2 Addition of a Multifunction Valve increases discharge height by 0 22 No change for the Auto A...

Page 8: ...2 0 39 4 57 3 94 0 24 1 57 0 59 0 59 0 79 3 15 4 17 Notes 1 All dimensions in inches 2 0 91 for EWC31 and 36 sizes 3 1 34 for EWC31 and 1 24 for EWC36 4 6 57 for EWC31 and 6 67 for EWC36 5 8 34 for EW...

Page 9: ...22 No change for the Auto Air Vent Valve 3 Addition of a Multifunction Valve increases overall liquid end height by 1 16 No change for the Auto Air Vent Valve 4 All dimensions in inches Notes 1 All d...

Page 10: ...strong UV radiation sunlight lamps The EK Series is specifically designed to withstand the elements and can be mounted directly outdoors within the temperature specifications This pump is cord connec...

Page 11: ...end first onto the tubing Push the tubing over the valve housing tip all the way to the valve housing shoulder Tip if the tubing is stiff from cold dip the tubing end in hot tap water for a few minut...

Page 12: ...applicable install the injection valve in 1 2 NPT thread at the injection point see section 2 5 and connect the discharge tubing to the injection valve Attach tubing as described in section 2 3 and as...

Page 13: ...e metering pumps is rated at maximum back pressure and will increase as back pressure decreases dependent on the specific installation Additionally the valve does NOT act as an anti siphon valve If si...

Page 14: ...ate Setting display MOVES to next menu SCROLL thu choices DISPLAY Operating condition and programming is displayed UP Key Increases numeric values Used with Start Stop key to change the programs DOWN...

Page 15: ...the down key will move from the Eternal Input On Time menu to the Stop menu and the initial factory setting is M OF input is normally open and contact closure will stop the pump Pressing the up key wi...

Page 16: ...ally run at 360 SPM as long as the two keys are held down This feature is useful for priming or the elimination of air trapped in the pump or tubing Pressing the stop start key will disable external c...

Page 17: ...solid state device If a solid state device is used the external circuit should be capable of switching 5VDC at 1 2mA with an active duty cycle pulse width of 5ms to 100ms actual closure time To conne...

Page 18: ...r Be sure to double check that the connector is installed properly into the connector assembly before installation onto the pump Digital Control The external pulse input should not exceed 360 pulses p...

Page 19: ...e of maximum desired Example Model EWB21F1 VC has maximum output of 1 8 GPH Desired output is 1 2 GPH 1 2 1 8 0 667 or 67 Using the UP and DOWN arrows set the frequency of the pump to 0 67 x 360 241 S...

Page 20: ...wise until it clicks down approximately turn 3 The diaphragm prevents siphoning of chemical through the pump Pressure Release 1 Stop the pump operation 2 Turn the pressure release knob clockwise until...

Page 21: ...mp head which helps speed the purging of air 3 6 Priming Install the pump as described in Section 2 0 With the pump turned on set stroke length at 100 and frequency to 360 SPM If the pump is equipped...

Page 22: ...sired output is reached disconnect the calibration column and reconnect the suction tubing See Figure 8 Calibration must be performed with actual application equivalent back pressure for accurate resu...

Page 23: ...ring and gasket s Install the new o ring gasket s and valve cartridges Be sure both valve seats are in the same orientation Refer to Figure below Tighten the suction fitting Similarly remove and repl...

Page 24: ...C Entire Head Assembly D Valve Cartridge E Air Vent Valve Manual Air Vent Valve Standard Auto Air Vent Valve Optional 4 23 26 25 14 11 13 12 11 13 12 19 17 1 17 14 11 13 12 11 13 12 3 4 ZZ 30 31 12 32...

Page 25: ...Valve 0 250 GFRPP 4 16 21 PC PE 12 EH0061 Seat Valve 0 188 FKM 4 5 11 VC PC VCA EH0048 Seat Valve 0 188 EPDM 4 11 VE PE VF EH0069 Seat Valve 0 250 FKM 4 16 21 VC PC EH0071 Seat Valve 0 250 EPDM 4 16 2...

Page 26: ...r EW and EK pump model sizes 31 and 36 C Entire Head Assembly D Valve Cartridge E Air Vent Valve 14 11 13 12 11 13 12 17 19 1 17 14 11 13 12 11 13 12 3 4 ZZ 6 5 27 23 16 15 10 4 4 18 8 9 E D D Part Nu...

Page 27: ...Body Manual Air Vent GFRPP 1 31 36 PC PE 11 EH0118 Guide Valve 0 375 PVC 4 31 36 VC VE VF EH0332 Guide Valve 0 375 GFRPP 4 31 36 PC PE 12 EH0119 Seat Valve 0 375 FKM 4 30 35 VC PC EH0125 Seat Valve 0...

Page 28: ...mbly D Valve Cartridge E Air Vent Valve Part numbers for these assemblies are on Page 30 TC Only 31 and 36 TC Only 11 16 and 21 FC Only All sizes 14 11 13 12 11 13 12 17 19 1 17 14 11 13 12 11 14 FC o...

Page 29: ...1 TC EH1549 Guide Valve 0 250 PVDF 4 16 21 FC TC EH0352 Guide Valve 0 375 PVDF 4 31 36 FC EH2368 Guide Valve 0 375 PVDF EW EWN 4 31 36 TC 12 EH1627 Seat Valve 0 188 PCTFE 4 11 TC EH0592 Seat Valve 0 2...

Page 30: ...21 316 SS 4 EH1556 Seat Valve EW EK31 36 316 SS 4 13 EH0049 Ball Valve 0 188 HC 4 EH0072 Ball Valve 0 250 HC 4 EH0126 Ball Valve 0 375 HC 4 14 EH0362 Gasket Valve Guide EW EK11 21 PTFE 2 EH0380 Gasket...

Page 31: ...8 11 16 21 PC E90016 Valve Foot 1 2 31 36 VC E90018 Valve Foot 1 2 31 36 PC E90034 Valve Foot 3 8 11 16 21 PE E90035 Valve Foot 3 8 11 16 21 VE E90036 Valve Foot 1 2 31 36 PE E90037 Valve Foot 1 2 31...

Page 32: ...29 A Drive Unit B Control Module C Head Assembly D Valve Cartridge E Air Vent Assembly C E Not shown in this view A B Not shown in this view Inside D D...

Page 33: ...F2 WC31 2 EWCF2 EWC36F1 WC36 1 EWCF1 X36PC X36PC PK X36PE X36PE PK X36VC X36VC PK X36VE X36VE PK X36VF X36VF PK X36TC X36TC PK X36FC X36FC PK EWC36F2 WC36 2 EWCF2 Valve Cartridge 11 E90041 E90042 E900...

Page 34: ...EK 31 EW EK EH1575 Gasket Pump Head EW EK 36 EW EK 12 EH1690 Spacer Bracket EW EK EZ 11 EW EK EH1431 Spacer Bracket EW EK EZ 16 EW EK EH1700 Spacer Bracket EW EK EZ 21 EW EK 13 EH1410 Screw M4 x 10 SS...

Page 35: ...luctuates Suction or discharge valve is clogged with foreign matter Disassemble inspect clean Air is trapped in pump Open air vent valve Overfeeding Install injection valve or back pressure valve Diap...

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